<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<table border="1">
			<!-- 表头 -->
			<thead>
				<tr>
					<th colspan="2">id</th>
					<th>名称</th>
					<th>内容</th>
					<th>操作</th>
				</tr>
			</thead>
			<!-- 主体 -->
			<tbody>
				<tr>
					<td colspan="2">1</td>
					<td>张三</td>
					<td>没有啥内容</td>
					<td><a>删除</a></td>
				</tr>
			</tbody>
		</table>
		
		<table border="1">
		  <colgroup>
		    <col span="2" style="background-color:red">
		    <col style="background-color:yellow">
		  </colgroup>
		  <tr>
		    <th>ISBN</th>
		    <th>Title</th>
		    <th>Price</th>
		  </tr>
		  <tr>
		    <td>3476896</td>
		    <td>My first HTML</td>
		    <td>$53</td>
		  </tr>
		</table>
	</body>
</html>
